About The Medical Condition Rheumatoid Factor

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Find the definition of the medical term Rheumatoid Factor. Rheumatoid Factor defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.

Rheumatoid Factor

Rheumatoid Factor Medical Condition Defined & Explained
Rheumatoid Factor Medical Condition

What's The Definition Of The Medical Condition Rheumatoid Factor?

Antibodies directed against antigenic determinants, i.e., Gm (gamma chain), in the Fc region of IMMUNOGLOBULIN G, found in the serum of about 80% of patients with classical or definite rheumatoid arthritis, but in only about 20% of patients with juvenile rheumatoid arthritis. Rheumatoid factors may be IMMUNOGLOBULIN M, IMMUNOGLOBULIN G, or IMMUNOGLOBULIN A antibodies, although other serological tests measure only IMMUNOGLOBULIN M. Rheumatoid factors also occur in other connective tissue diseases and infectious diseases. (From Dorland, 28th ed)

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